If im coding for the providers services and entering in just icd 10 cm- but see the patient is inpatient or the EM service is an inpatient code- am I technically coding inpatient?

In my screen, EPIC is only showing the option to enter icd 10-cm and I’ve read that you enter pcs during inpatient. So I’m confused. What’s the difference and when should I be entering pcs codes?

I only have Aapc’s Cpc training and they didn’t really cover this. I have an interview coming up with another facility and I just want to be prepared if they ask me if I have inpatient coding experience- would I even say yes? I’m very confused and obviously too embarrassed to ask my coworkers/manager.